Doug Fister was expected to start, but is dealing with some elbow inflammation. The injury is not considered serious. Roark is competing for a job at the back end of the team's rotation. He posted a 1.51 ERA in 53 2/3 innings last year.
Fister had a MRI on his elbow, which revealed some inflammation. The team is not concerned about the injury. Tanner Roark will get the start in Fister's place. Fister posted a 3.67 ERA in 208 2/3 innings last year.
Janssen is dealing with some shoulder tenderness, but the team doesn't think it's serious. He was shelved for a few days, but has resumed throwing. Janssen is expected to open the season as the team's closer as long as he's healthy.
He posted a 2.56 ERA in 52 2/3 innings last year.
Rasmus said the shot should "loosen up" his stiff neck. He expects to be cleared for all baseball activities Saturday. Rasmus hit .276/.338/.501 in 417 at-bats last year.
Gosewisch has been dealing with a calf injury, but said he could play Friday. He's battling to be the team's backup catcher. Gosewisch missed about a week due to the injury.
Ross has been receiving at-bats in minor-league games, and is close to doing sliding drills. Ross is attempting to come back from a gruesome hip injury. He's hoping to make his spring debut in a week or so. It's unlikely Ross breaks camp with the team in time to play in the Australia series.
Ross hit .278/.331/.413 in 317 at-bats last year.
Fister was expected to make the start, but was scratched in favor of Tanner Roark. An updated lineup card showed Fister starting, but Roark was still listed in the lineup. It's possible Fister will get the start, but Roark will come on in relief.
Fister posted a 3.67 ERA in 208 2/3 innings last year.
Gonzalez signed with the club Tuesday. He said he had offers from four other teams, but wanted to sign with the Nationals because he felt they were closest to winning a ring. He posted a 4.68 ERA in 50 innings last year.
Sabathia is learning the pitch from former Yankees pitcher Andy Pettitte. Sabathia said he had success throwing the cutter Thursday, and added that he's anxious to use it in a game. Sabathia believes adding a cutter will help him succeed despite his diminishing velocity.
Sabathia posted a 4.78 ERA in 211 innings last year.
Motte is recovering from Tommy John surgery, but is said to be ahead of schedule. Despite his progress, it's tough to know if Motte will be ready to go by opening day. Motte posted a 2.75 ERA in 72 innings in 2012.